Im_original=imread（‘len.ppm‘）;
Im_modified=imread（‘len_lossy50.jpg‘）;
S1=SNR（Im_originalIm_modified）
S2=MSE（Im_originalIm_modified）
S3=PSNR（Im_originalIm_modified）

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????598??2008-02-16?15:49??SNR.m

?????文件??????65551??2008-01-30?00:28??len.ppm

?????文件???????6990??2008-01-30?02:28??len_lossy50.jpg

?????文件????????170??2008-02-16?15:47??mian.m

?????文件????????484??2008-02-16?15:49??MSE.m

?????文件????????569??2008-02-16?15:49??PSNR.m

-----------?---------??----------?-----??----

????????????????74362????????????????????6